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#11
September 20th 03, 04:45 PM
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alt.sys.pdp8
alt.sys.pdp11 alt.sys.pdp10 "xpyttl" wrote in message ... Talk about bad timing .... Just a couple of days ago two friends of mine hauled a PDP/8 out to the dump. Of course, you might not have been able to afford the power to run a REAL PDP/8. You do realize that there are people who collect these machines, and have been known to pay REAL MONEY for them, don't you??? |
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#12
September 20th 03, 08:22 PM
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"John R. Strohm" ) writes:
alt.sys.pdp8 alt.sys.pdp11 alt.sys.pdp10 "xpyttl" wrote in message ... Talk about bad timing .... Just a couple of days ago two friends of mine hauled a PDP/8 out to the dump. Of course, you might not have been able to afford the power to run a REAL PDP/8. You do realize that there are people who collect these machines, and have been known to pay REAL MONEY for them, don't you??? A friend sold a PDP/8 on Ebay for around $3000 US (and since he's in Canada, it will be even better for him), just in July. It did have some odd suffix (and some oddity about the hardware to go with it), so I'm not sure it that drove the price up. It was his first "home computer", and while he got a good deal on it (I forget the story, but I believe he bought it surplus in the seventies). He was moving, so it seemed like a good time to clear it out. Oddly, a couple of years ago I pointed him to someone periodically posting in buy and sell newsgroups looking for such computers. When my friend contacted him, the buyer was only willing to pay a few hundred dollars. Sort of to get it back to amateur radio, most people know that Wayne Green started BYTE, and then later Kilobaud. But in the November 1972 issue of 73 (the thickest up to that time), there was an article about building your own computer, from logic gates etc. It was not a construction article, but gave quite a bit of detail on what was needed for such a time and place. Nobody ever seems to mention that article after the fact. I'm still trying to decide if the article had any bearing on how things went later. Did Wayne print it because he saw things going in that way, or did he just print it as filler, yet when small computers came along a few years alter, it helped to direct him to small comptuers? Michael VE2BVW |
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#13
September 20th 03, 08:22 PM
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"John R. Strohm" ) writes:
alt.sys.pdp8 alt.sys.pdp11 alt.sys.pdp10 "xpyttl" wrote in message ... Talk about bad timing .... Just a couple of days ago two friends of mine hauled a PDP/8 out to the dump. Of course, you might not have been able to afford the power to run a REAL PDP/8. You do realize that there are people who collect these machines, and have been known to pay REAL MONEY for them, don't you??? A friend sold a PDP/8 on Ebay for around $3000 US (and since he's in Canada, it will be even better for him), just in July. It did have some odd suffix (and some oddity about the hardware to go with it), so I'm not sure it that drove the price up. It was his first "home computer", and while he got a good deal on it (I forget the story, but I believe he bought it surplus in the seventies). He was moving, so it seemed like a good time to clear it out. Oddly, a couple of years ago I pointed him to someone periodically posting in buy and sell newsgroups looking for such computers. When my friend contacted him, the buyer was only willing to pay a few hundred dollars. Sort of to get it back to amateur radio, most people know that Wayne Green started BYTE, and then later Kilobaud. But in the November 1972 issue of 73 (the thickest up to that time), there was an article about building your own computer, from logic gates etc. It was not a construction article, but gave quite a bit of detail on what was needed for such a time and place. Nobody ever seems to mention that article after the fact. I'm still trying to decide if the article had any bearing on how things went later. Did Wayne print it because he saw things going in that way, or did he just print it as filler, yet when small computers came along a few years alter, it helped to direct him to small comptuers? Michael VE2BVW |
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#14
September 20th 03, 09:09 PM
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"Michael Black" wrote in message
... "John R. Strohm" ) writes: You do realize that there are people who collect these machines, and have been known to pay REAL MONEY for them, don't you??? These guys had this thing to the dump before I even heard about it. To tell the truth, I'm not so sure I would have wanted to deal with posting it on eBay, packaging, shipping the beast, all that, even if I had a chance. Sort of to get it back to amateur radio, most people know that Wayne Green started BYTE, and then later Kilobaud. But in the November 1972 issue of 73 (the thickest up to that time), there was an article about building your own computer, from logic gates etc. Reminds me of something really great from a few years back. I was the advisor for an electronics specialty Explorer post (basically older Boy Scouts). Anyway, we were donated a PDP/4. This was an 18 bit machine, interfaced to the printer and tape with a 6 bit transcode instead of ASCII. Anyway, as we were first looking over the thing, with it's racks of cards and beautiful, huge electrolytics in the supply, my assistant advisor taps me on the shoulder and says "come look at this. See that rack of cards there? I think it's the accumulator." Sure enough, 18 cards for the accumulator, 18 cards for the program counter, 18 cards for the M register, one card per bit! ... |
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#15
September 20th 03, 09:09 PM
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"Michael Black" wrote in message
... "John R. Strohm" ) writes: You do realize that there are people who collect these machines, and have been known to pay REAL MONEY for them, don't you??? These guys had this thing to the dump before I even heard about it. To tell the truth, I'm not so sure I would have wanted to deal with posting it on eBay, packaging, shipping the beast, all that, even if I had a chance. Sort of to get it back to amateur radio, most people know that Wayne Green started BYTE, and then later Kilobaud. But in the November 1972 issue of 73 (the thickest up to that time), there was an article about building your own computer, from logic gates etc. Reminds me of something really great from a few years back. I was the advisor for an electronics specialty Explorer post (basically older Boy Scouts). Anyway, we were donated a PDP/4. This was an 18 bit machine, interfaced to the printer and tape with a 6 bit transcode instead of ASCII. Anyway, as we were first looking over the thing, with it's racks of cards and beautiful, huge electrolytics in the supply, my assistant advisor taps me on the shoulder and says "come look at this. See that rack of cards there? I think it's the accumulator." Sure enough, 18 cards for the accumulator, 18 cards for the program counter, 18 cards for the M register, one card per bit! ... |
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#16
September 20th 03, 09:17 PM
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Shortly after I began working at Tektronix, I recall seeing an official
desk name plaque sitting on top of a PDP-11. The name was "Petey P. Eleven". Roy Lewallen, W7EL |
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#17
September 20th 03, 09:17 PM
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Shortly after I began working at Tektronix, I recall seeing an official
desk name plaque sitting on top of a PDP-11. The name was "Petey P. Eleven". Roy Lewallen, W7EL |
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#18
September 21st 03, 02:20 AM
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#19
September 21st 03, 02:20 AM
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#20
September 21st 03, 05:16 AM
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"xpyttl" wrote in message ... Talk about bad timing .... Just a couple of days ago two friends of mine hauled a PDP/8 out to the dump. Of course, you might not have been able to afford the power to run a REAL PDP/8. I never actually worked with an 8, although I did publish a paper on 11M crash dump analysis. Might be fun to be able to grok a little Macro-11 from time to time ... hmmm ... wonder if there's a Pro350, or even an old 11/44, languishing in someone's basement. .. "kenneth scharf" wrote in message ... Does anybody know where I can get a Harris or Intersil HD6100, HD6120, IM6100, or IM6120 microprocessor (cmos pdp-8)? I used to work for Digital, and thought it would be an interresting project to homebrew a PDP-8 system. I have a T11 microprocessor chip in the junbox someplace, so a PDP-11 system is also a possibility. Somewhere I have packed away a Sym-1 an Elf II and a Intersil 6100 familiarization board that had something like 256 bytes of ram, a boot rom and a uart (the uart is farkled either the data out or data in line is bad which is why I packed it away). I only have 25 more years till retirement, so I may find time then to pull them out then and see if they still work. As it is now I can't even find time to work on my remaining cp/m machines (Xerox 820IIHD, RS 4p, Balcones BNV205, Osborne 1, Osborne Exec, and Kaypro4). thanks, John. KC5DWD |
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